Hypertherm XPR460 - Troubleshooting for a Fan Timeout; Diagnostic Code 588

Diagnos-
tic codes
Thermis-
tor location
Location of thermis-
tor wires/connector
1st con-
nector pin
2nd con-
nector pin
583, 663, 674 Inductor 2B PCB 1 (plasma power supply) J1.2 pin 1 J1.2 pin 2
584, 664, 675 Inductor 3A PCB 1 (plasma power supply) J1.2 pin 3 J1.2 pin 4
585, 665, 676 Inductor 3B PCB 1 (plasma power supply) J1.2 pin 5 J1.2 pin 6
586, 666, 677 Transformer 1 PCB 1 (plasma power supply) J1.4 pin 1 J1.4 pin 2
589, 682 , 683 Transformer 2 PCB 1 (plasma power supply) J1.25 pin 1 J1.25 pin 2
791, 792, 793 Control
transformer
PCB 1 (plasma power supply) J1.25 pin 3 J1.25 pin 4
c. Look for a resistance value from each thermistor wire that is outside of the minimum or
maximum value in Ohmic resistance values for thermistors on page 334.
At approximately 25°C (77°F), look for a resistance of approximately 10,000 ohms (Ω).
d. For each resistance value that you measure, do the following:
If you see this condition... Do these steps...
The ohmic resistance is outside of
the minimum or maximum value in
Ohmic resistance values for ther-
mistors on page 334.
Look for a wiring fault. To make a decision on if thermistor replacement is
necessary, speak to your cutting machine supplier or regional Hypertherm
Technical Service team.
The resistance value is approxi-
mately 0 ohms (Ω).
1. Examine the wiring between each thermistor and its connector pins.
2. Look for shorts between wires or to the ground.
The thermistor resistance is in the
permitted range when the thermis-
tor is disconnected from the con-
trol PCB, and the code continues
when the thermistor is reconnected
to the control PCB.
To make a decision on if replacement of the control PCB is necessary,
speak to your cutting machine supplier or regional Hypertherm Technical
Service team. Refer to Plasma power supply control PCB (141545) dia-
gram on page 382.
11. If you cannot find or correct the problem, speak to your cutting machine supplier or regional
Hypertherm Technical Service team.
Troubleshooting for a fan timeout
Diagnostic code 588
Diagnostic code 588 identifies a problem with an internal fan.
Diagnostics and Troubleshooting
8
340
811530 Instruction Manual XPR460